package com.zhao.mall.common.valid;

import lombok.extern.slf4j.Slf4j;

import javax.validation.Constraint;
import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
import java.util.HashSet;
import java.util.Set;

@Slf4j
public class ListValueConstraintValidator implements ConstraintValidator<ListValue, Integer> {

    private Set<Integer> set = new HashSet<>();

    /**
     * 初始化方法
     * @param constraintAnnotation
     */
    public void initialize(ListValue constraintAnnotation) {
        int[] values = constraintAnnotation.value();
        if (values.length >0){
            for (int value : values) {
                set.add(value);
            }
        }else{
            log.error("数据为空");
        }

    }

    /**
     * 判断是否校验成功
     * @param value   需要校验的值
     * @param context
     * @return
     */
    public boolean isValid(Integer value, ConstraintValidatorContext context) {
        return set.contains(value);
    }
}
